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| Number | Title | Issue Date |
| 7316127 | Hydrocarbon gas processing for rich gas streams A process for the recovery of ethane and heavier hydrocarbon components from a hydrocarbon feed gas stream. Feed gas stream is cooled into a first and second cooled streams. First and second cooled streams are sent to a cold absorber and separated into a first gas s... | 01/08/2008 |
| 7159417 | Hydrocarbon recovery process utilizing enhanced reflux streams A process and apparatus for the recovery of ethane and heavier components from a hydrocarbon feed gas stream. Feed gas stream is cooled and separated into a vapor stream and a condensed stream. Vapor stream is divided into a first and a second gas streams. First gas... | 01/09/2007 |
| 7069744 | Lean reflux-high hydrocarbon recovery process A two-tower scheme process for the recovery of propane and heavier components from a hydrocarbon gas stream is provided. Feed gas is cooled, partially condensed, and then separated to give a first liquid stream and a first vapor stream. First liquid stream is sent t... | 07/04/2006 |
| 6964181 | Optimized heating value in natural gas liquids recovery scheme A process and apparatus for controlling or reducing the heating value or BTU content of NGL recovered from LNG streams. LNG pipelines have a maximum allowable heating value that LNG must be within prior to entering the pipeline. If the LNG heating value is too high,... | 11/15/2005 |
| 6869251 | Marine buoy for offshore support A marine buoy for the offshore support of subsea production and drilling activities that has a closed-bottomed base section with a solid ballast and variable ballast chambers, a chamber in the base section for storing equipment and supplies, and an upper section wit... | 03/22/2005 |
| 6823692 | Carbon dioxide reduction scheme for NGL processes An ethane recovery process resulting in a reduction in the amount of carbon dioxide in the recovered NGL stream is provided. To reduce the amount of carbon dioxide, a fractionation tower is provided with a bottom reboiler, and possibly one or more side reboilers hig... | 11/30/2004 |
| 6786679 | Floating stability device for offshore platform An offshore well platform is towed in an upright condition to a well site by the use of a temporary flotation device. The flotation device mounts to a portion of the platform and is partially submerged, increasing the ability and buoyancy of the platform. At the sit... | 09/07/2004 |
| 6712880 | Cryogenic process utilizing high pressure absorber column A cryogenic process and apparatus for separating multi-component gaseous hydrocarbon streams to recover both gaseous and liquid compounds. More particularly, the cryogenic processes and apparatus of this invention utilize a high pressure absorber to improve the ener... | 03/30/2004 |
| 6503023 | Temporary floatation stabilization device and method A temporary stability module and method for marine structures during construction, transportation and installation is taught. The device and method permit the structure, including platforms, deck and equipment to be constructed in an upright position, tow... | 01/07/2003 |
| 6447208 | Extended base tension leg substructures and method for supporting offshore platforms An extended-base tension leg substructure, an offshore platform supported on the substructure and a method for supporting an offshore platform on the substructure are disclosed, where the substructure includes a plurality of support columns disposed about... | 09/10/2002 |
| 6371697 | Floating vessel for deep water drilling and production An exemplary floatable vessel is described having an upper tower section with a reduced diameter or width and an affixed lower base section having an enlarged diameter or width. The lower section contains weighted ballast distributed upon its lower floor.... | 04/16/2002 |
